Closure.



H. E. TOWNSEND.

CLOSURE.

APPLICATION FILED MAY I6. 1916.

1,231,099. Patented June 26,1917.-

INVENTOR fih/z/er 15 Ema MW ATTORNEy rinrrnn srn rs rarnnr orrion.

HARRY E. TOWNSEND,

CORPORATION, OF BROOKLYN,

OF BROOKLYN, NEW YORK, ASSIGNOR TO ANCHOR CAP & CLOSURE NEW YORK, A CORPORATION OF NEW YORK.

CLOSURE.

Specification of Letters Patent.

Patented June 26, 1917.

Application filed May 16, 1916. Serial No. 97,871.

To all whom it may concern:

Be it known that I, HARRY E. TOWN- SEND, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Closures, of which the following is a specification.

This invention relates to closures for receptacles and has particular reference to metallic slip closures as applied to glass containers.

The objects of invention are to provide a closure that is cheap to manufacture, may be easily and quickly applied, that will not easily be dislodged accidentally, and yet may be removed without difliculty when it is desired to open the package.

Referring to the drawings:

Figure 1 is a side elevation of the improved closure as applied to a glass container in theform of a tumbler;

Fig. 2 is a sectional elevation showing the closure ready to be forced upon the container;

.Fig. 3 is a sectional elevation showing the form of the closure after it has been attached to over-size glass: and

Fig. 4 is a view similar to Fig. 3, showing the closure attached to under-size glass.

As shown in the figures, the closure comprises a body 10 from which depends an annular skirt. This skirt is preferably provided with two narrow vertical walls 11 and 12, and between these walls is located an annular groove 13, the concave side of which is'on the outer side of the skirt while the convex side is located on the inner side of the skirt and in contact with the glass 14.

In applying the cap, it is first placed in the position shown in Fig. 2, and is then forced downward upon the glass, the skirt springing outward under the pressure and the convex side of the groove taking a frictional grip upon the glass, thereby producing a sealing zone on the bead which 1s in very intimate contact with the glass side wall. The cap is easily applied in this manner as the wall 12 combined with the lower half of the groove 13 form a flaring guide the opening of which is considerably larger than the outside diameter of the receptacle.

An important feature of this closure is i that it is adapted to seal differing sizes of receptacles. Glass receptacles, due to limiportion and at tations in their manufacture, vary greatly in size from standard dimensions. In the manufacture of a given size of glass, a great proportion of the receptacles run either under or over that size, sometimes by several millimeters. In addition, a great deal of the glass is out of round or elliptical and in all of these cases it is difficult to provlde a cap that seal such glass effectively. In my improved cap, these variations are taken care of in large part by the annular groove 13, and as shown in Figs. 3 and 4, the spring of the skirt is such that the same sized cap will eifectively close an over sized receptacle as shown in Fig. 3 or an under sized receptacle as shown in Fig. 4.

When in place, the cap is attached to the glass with a tight frictional grip so that it may not be easily detached.

To remove the cap, the wall 11 is lightly tapped with any object such as a knife or spoon. The tapping at this point has a peening eflect, causing the groove 13 to flatten out and loosen its grip upon the receptacle. The closure may then be removed with ease, and may be as easily replaced, though in the latter case, it will not fit as securely to the container as in the first instance.

I claim:

1. As an article of manufacture, a closure cap for containers of glass and the like, comprising a cover portion adapted to cover and protect the end of a suitable glass jar, a substantially uniform continuous skirt of resilient material depending from the cover substantially right angles thereto, the skirt being provided with a continuous annular groove having the concave portion of the groove on the exterior of the skirt and forming a continuous annular bead on the interior of the skirt, said groove being formed on such radius as to enable the bead to stretch and slightly fiatten, thereby forming a sealing zone when the cap is 2. A sealed package comprising a container of glass and the like, and having a substantially incompressible smooth cylindrical side wall, in combination with a sealing cap therefor comprising a cover portion adapted to cover and protect the end of the said container, a substantially uniform contmuous skirt of resilient material 5 depending from the cover portion and at 0 continuous annular bead on the interior of the said skirt, said groove being formed on a relatively large radius to enable the bead to be stretched, whereby the bead exerts radial compression forces against the smooth side ;Wall of the container over an 15 annular area comprising a sealing zone and forms a tight friction seal therewith, and enabling the cap to be removed Without destruction.

HARRY E. TOWNSEND. 

